Drop a HAR file here
Export a HAR (HTTP Archive) file from your browser's Developer Tools (Network tab) and load it to visualize the request waterfall.
Chrome / Edge
Open DevTools > Network tab > Ensure recording is on > Refresh > Click the download icon (Export HAR) or right click > Save all as HAR.
Firefox
Open DevTools > Network tab > Refresh > Click the gear icon > Save All As HAR.